With a and plural. A piece or parcel of land. Obsolete.

An (extensive) area containing coal-bearing strata; a region in which coal is mined.

†(a) a field associated with a gasworks (in later use frequently in place names) (obsolete); (b) an area of land or seabed underlain by deposits…

= tin-field n.

In plural. A place where gold-digging is carried on; an excavation. Cf. digging, n. 4a. Now chiefly historical.

A district or region in which gold is found as a mineral. Frequently in plural.

An area of land or seabed underlain by oil-bearing strata, esp. in amounts that support commercial exploitation and with the oil forming a number of…

a zone containing oilfields.

Australian. (See quot. 1869.)

a tract of country yielding tin.

an area of central Africa in which great quantities of copper are mined.

colloquial (originally U.S.). An oil-producing area; the oil industry in a particular area.